diff --git a/src/reader.c b/src/reader.c
index 3f7cb0e3..173be3dc 100644
--- a/src/reader.c
+++ b/src/reader.c
@@ -52,8 +52,6 @@ extern int failure;
 extern int expected_conflicts;
 extern char *token_buffer;
 
-extern int atoi ();
-
 extern void init_lex();
 extern void tabinit();
 extern void output_headers();